Table of Contents
Advertisement
8-port Gigabit Ethernet Switch User's Guide
The Switch STP performs the following functions:
Creates a single spanning tree from any combination of switching or bridging elements.
Creates multiple spanning trees – from any combination of ports contained within a single switch, in user-
specified groups.
Automatically reconfigures the spanning tree to compensate for the failure, addition, or removal of any
element in the tree.
Reconfigures the spanning tree without operator intervention.
STP Operation Levels
The Switch allows for two levels of operation: the switch level and the port level. The switch level forms a spanning tree
consisting of links between one or more switches. The port level constructs a spanning tree consisting of groups of one or
more ports. The STP operates in much the same way for both levels.
Note:
On the switch level, STP calculates the Bridge Identifier for each switch and then sets the Root Bridge
and the Designated Bridges.
Note: On the port level, STP sets the Root Port and the Designated Ports.
The following are the user-configurable STP parameters for the switch level:
Parameter
Description
Bridge Identifier
A combination of the User-set
priority and the switch's MAC
(Not user-
address.
configurable
Identifier
except by setting
parts: a 16-bit priority and a
priority below)
48-bit Ethernet MAC address
Priority
A relative priority for each
switch – lower numbers give
Default
Value
32768 + MAC
The
Bridge
consists
of
two
32768
29
Advertisement
Table of Contents
Troubleshooting
